Home / 20,720.23-28,584.81-14,003.41

Finding the Fourth Proportional to 20,720.23, 28,584.81 and 14,003.41

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Solution

The fourth proportional to 20,720.23, 28,584.81 and 14,003.41 is: 19,318.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,720.23 : 28,584.81 = 14,003.41 : x
  2. Step 2: Convert to fraction form
    20,720.23/28,584.81 = 14,003.41/x
  3. Step 3: Cross multiply
    20,720.23x = 28,584.81 × 14,003.41
  4. Step 4: Simplify right side
    20,720.23x = 400,284,814.20
  5. Step 5: Solve for x
    x = 400,284,814.20/20,720.23
  6. Step 6: Final answer
    x = 19,318.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.